update

UserSystem.cs

@@ -0,0 +1,172 @@
+using System;
+using System.IO;
+
+namespace CMLeonOS
+{
+    public class UserSystem
+    {
+        private string adminPasswordFilePath = @"0:\admin_password.txt";
+        private bool isPasswordSet = false;
+
+        public UserSystem()
+        {
+            CheckPasswordStatus();
+        }
+
+        private void CheckPasswordStatus()
+        {
+            try
+            {
+                isPasswordSet = File.Exists(adminPasswordFilePath);
+            }
+            catch
+            {
+                isPasswordSet = false;
+            }
+        }
+
+        public bool IsPasswordSet
+        {
+            get { return isPasswordSet; }
+        }
+
+        public void SetAdminPassword()
+        {
+            Console.WriteLine("====================================");
+            Console.WriteLine("        First Time Setup");
+            Console.WriteLine("====================================");
+            Console.WriteLine("Please set a password for admin user:");
+            
+            string password = ReadPassword();
+            
+            Console.WriteLine("Please confirm your password:");
+            string confirmPassword = ReadPassword();
+            
+            if (password == confirmPassword)
+            {
+                try
+                {
+                    // 简单存储密码（实际应用中应使用加密）
+                    File.WriteAllText(adminPasswordFilePath, password);
+                    Console.WriteLine("Password set successfully!");
+                    isPasswordSet = true;
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"Error setting password: {ex.Message}");
+                }
+            }
+            else
+            {
+                Console.WriteLine("Passwords do not match. Please try again.");
+                SetAdminPassword();
+            }
+        }
+
+        public bool Login()
+        {
+            Console.WriteLine("====================================");
+            Console.WriteLine("          System Login");
+            Console.WriteLine("====================================");
+            Console.WriteLine("Username: admin");
+            Console.WriteLine("Password:");
+            
+            string password = ReadPassword();
+            
+            try
+            {
+                string storedPassword = File.ReadAllText(adminPasswordFilePath);
+                if (password == storedPassword)
+                {
+                    Console.WriteLine("Login successful!");
+                    return true;
+                }
+                else
+                {
+                    Console.WriteLine("Invalid password. Please try again.");
+                    return false;
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Error during login: {ex.Message}");
+                return false;
+            }
+        }
+
+        private string ReadPassword()
+        {
+            string password = "";
+            while (true)
+            {
+                ConsoleKeyInfo keyInfo = Console.ReadKey(true);
+                if (keyInfo.Key == ConsoleKey.Enter)
+                {
+                    Console.WriteLine();
+                    break;
+                }
+                else if (keyInfo.Key == ConsoleKey.Backspace)
+                {
+                    if (password.Length > 0)
+                    {
+                        password = password.Substring(0, password.Length - 1);
+                        // 简化退格处理，只修改password字符串
+                        // 在Cosmos中，Console.Write("\b \b")可能不被支持
+                    }
+                }
+                else
+                {
+                    password += keyInfo.KeyChar;
+                    Console.Write("*");
+                }
+            }
+            return password;
+        }
+
+        public bool ChangePassword()
+        {
+            Console.WriteLine("====================================");
+            Console.WriteLine("        Change Password");
+            Console.WriteLine("====================================");
+            
+            // 验证当前密码
+            Console.WriteLine("Please enter your current password:");
+            string currentPassword = ReadPassword();
+            
+            try
+            {
+                string storedPassword = File.ReadAllText(adminPasswordFilePath);
+                if (currentPassword != storedPassword)
+                {
+                    Console.WriteLine("Current password is incorrect.");
+                    return false;
+                }
+                
+                // 设置新密码
+                Console.WriteLine("Please enter your new password:");
+                string newPassword = ReadPassword();
+                
+                Console.WriteLine("Please confirm your new password:");
+                string confirmPassword = ReadPassword();
+                
+                if (newPassword == confirmPassword)
+                {
+                    // 存储新密码
+                    File.WriteAllText(adminPasswordFilePath, newPassword);
+                    Console.WriteLine("Password changed successfully!");
+                    return true;
+                }
+                else
+                {
+                    Console.WriteLine("New passwords do not match.");
+                    return false;
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Error changing password: {ex.Message}");
+                return false;
+            }
+        }
+    }
+}